[Discuss] Cron fail lesson of the day

Bob Leigh bobleigh at twomeeps.com
Mon Sep 16 15:55:28 EDT 2019


In 1980-81, I worked on a server that had been manufactured for use in
Panama, therefore it had a 50Hz clock.  Work days passed quickly... but the
boss refused to let us go home when the (fast) system clock said 17:00:00.

Bob

On Mon, Sep 16, 2019 at 3:23 PM Rich Pieri <richard.pieri at gmail.com> wrote:

> Not a cron fail as such but at one of my early gigs I had a machine
> with an hourly cron job that sometimes would run twice and sometimes
> not run at all.
>
> Turned out there were two time sync daemons running using different
> time servers and those two servers were far enough part that the system
> time intermittantly skipped past and back over the hour mark.
>
> --
> Rich Pieri
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